I don't have much to add... it's crazy as hell at work today.
HD 6520G I have this APU... wow... that is all I have to say. I OC'd the living daylights out of it and it's still 'wow' (literally core3 is like dead now lol) ... I hated this computer lol and it had a dedicated 7670m as well.
Even if my brain wasn't burnt out right now.. I'd probably have little advice to give on this issue.
If you somehow have a dedicated GPU in there (like mine has a 7670m)... disable Hybrid Crossfire. it's a bad joke and a half with that APU.
Shot in the dark I'd completely wipe the drivers, aggressively... since you don't know much about computers... You might not want to do this... BSOD on a restart is a defnite possibility... but it's 100% correctable.
-------- Proceede at your own risk --- copy paste incoming
http://support.amd.com/en-us/download
AMD's uninstall method:
http://support.amd.com/en-us/kb-articles/Pages/GPU57RemoveOldGraphicsDrivers.aspx
Catalyst Uninstall Utility (seems to be removed from AMD's site now)
http://www.techspot.com/drivers/driver/file/information/16748/
Copypasta2:
If you aren't used to Safe Mode or scared of BSOD don't do it.
Uninstall your AMD/ATiDrivers from Control Panel (all)
Restart into Safe Mode
Run DriverSweeper
Restart
Install Latest Drivers
http://www.guru3d.com/content_page/guru3d_driver_sweeper.html
If you have a BSOD on restart. Go back to Safe Mode. Go to System->Device Manager->Display Adapters Remove them, restart.
Safe Mode /w Networking will save the day
--- This is another popular tool, it's an alternative to DriverSweeper
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=display%20driver%20remover